While Ajax put in the most dominant performance of the night, outplaying Schalke with their youthful side to earn a two-goal advantage.

Horrendous scenes at the Parc Olympique Lyonnais involving OL and Besiktas fans clashing in the stands was briefly forgotten in a thrilling contest.

The Ligue 1 side earned a 2-1 victory despite going behind to Ryan Babel's opener for the visitors. Late goals from Corentin Tolisso and Jeremy Morel, thanks to Fabri's awful misjudgement - more of which later - secured the win.

Celta beat Genk 3-2 in the other quarter-final with Iago Aspas scoring the goal of the night, but Heynen Bryan's stoppage time strike gives the Belgian side belief heading back home.

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1. Kluivert can be special

Justin Kluivert is just 17 years old and will struggle to match the accolades of his father, Patrick, but the Ajax starlet offered up glimpses of an outstanding forward in the making.

Quick and willing to beat his man on either side, Kluivert is in the perfect environment - with the Eredivisie side most certainly prepared to let him try things as he develops in the coming years.

The instinct is there, too, dashing into space whenever Traore wandered away from his centre-forward role and his delivery into the box handed Klaassen his second of the match to cap off an excellent performance.

2. Traore bright but profligacy could prove costly

Ajax dominated Schalke throughout but Bertrand Traore, looking to impress parent club Chelsea, failed to score despite a flurry of second-half chances falling his way.

The Burkina Faso international could only blast straight at Ralf Fahrmann when given time and space inside the box.

His all-round play will have impressed Antonio Conte though: dropping deep to drag Benedikt Howedes and Matija Nastasic out of position - and his explosive change of direction and smart switch of play to Kluivert led to Ajax doubling their lead.

Ajax will need a solid display in Germany next week to ensure those wasted chances don't come back to bite them.

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3. Aspas' transformation continues

The consensus at Liverpool is that Iago Aspas was unable to cut it at Anfield, yet his remarkable transformation with Celta continues.

The Spanish winger has 22 goals in all competitions with a beautiful, low strike slotted into the bottom left corner from the edge of the area adding to his collection.

(Image: AFP)

4. Lyon resilience pays off

Besiktas rode their luck after moving into an early lead with the woodwork rattled by Corentin Tolisso's thumping header suggesting it would not be their night.

The French midfielder would sniff out the chance to bring OL level moments later though, stabbing home to send the Parc Olympique Lyonnais crackers.

A gift from Fabri quickly put the Ligue 1 side in front but it was Lyon's determination and will to continue hammering on the door that eventually cracked Besiktas and forged out an unlikely, yet significant, first-leg lead.

Jeremy Morel celebrates scoring after a gift from Fabri (Image: AFP)

5. Fabri provides comedy howler for the ages

Besiktas held out for so long but once Lyon equalised the mindset from Şenol Güneş' side had to change in order to solidify a positive first-leg result on the road.

Fabri's audacity to attempt a Cruyff turn inside his penalty area was asking for trouble and it was duly punished.

The Spanish shot-stopper's stuttering feet allowed Morel to slip in and tap home into an empty net to gift Lyon the win in the most absurd circumstances.